Example usage for com.google.common.primitives Longs toByteArray

Introduction

In this page you can find the example usage for com.google.common.primitives Longs toByteArray.

Prototype

public static byte[] toByteArray(long value)

Source Link

Document

Returns a big-endian representation of value in an 8-element byte array; equivalent to ByteBuffer.allocate(8).putLong(value).array() .

Usage

From source file:org.apache.sysml.utils.TensorboardLogger.java

/**
 * Writes scalar of given value in tensorboard format 
 * // w  w w .  j  a  va  2s  . c  o  m
 * @param logDir log directory of tensorboard 
 * @param tag scalar tag (for example: training_loss, validation_loss, ...)
 * @param step usually the iteration number
 * @param value value of the scalar
 */
public static void writeScalar(String logDir, String tag, long step, float value) {
    String filePath = logDir + File.separator + "tfevents.event_systemml_scalar";
    try {
        FileOutputStream outputStream = new FileOutputStream(filePath, true);
        Event event = Event.newBuilder().setWallTime(System.currentTimeMillis() / 1e3).setStep(step)
                .setSummary(Summary.newBuilder()
                        .addValue(Summary.Value.newBuilder().setTag(tag).setSimpleValue(value)).build())
                .build();
        byte[] eventString = event.toByteArray();
        byte[] header = reverse(Longs.toByteArray((long) eventString.length));
        write(outputStream, header);
        write(outputStream, eventString);
        outputStream.close();
    } catch (IOException e) {
        throw new RuntimeException("Error writing event in tensorboard directory:" + filePath, e);
    }
}

From source file:com.prealpha.minelib.nbt.DoubleTag.java

@Override
public ByteBuffer toBytes() {
    long longBits = Double.doubleToLongBits(value);
    return ByteBuffer.wrap(Longs.toByteArray(longBits));
}

From source file:com.github.benmanes.caffeine.cache.simulator.membership.bloom.AddThisBloomFilter.java

@Override
public boolean mightContain(long e) {
    return bloomFilter.isPresent(Longs.toByteArray(e));
}

From source file:io.warp10.continuum.DirectoryUtil.java

private static long computeHash(long k0, long k1, long timestamp, List<String> classSelectors,
        List<Map<String, String>> labelsSelectors) {
    ////from ww  w  . j  a  va2  s.  c  om
    // Create a ByteArrayOutputStream into which the content will be dumped
    //

    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    // Add timestamp

    try {
        baos.write(Longs.toByteArray(timestamp));

        if (null != classSelectors) {
            for (String classSelector : classSelectors) {
                baos.write(classSelector.getBytes(Charsets.UTF_8));
            }
        }

        if (null != labelsSelectors) {
            for (Map<String, String> map : labelsSelectors) {
                TreeMap<String, String> tm = new TreeMap<String, String>();
                tm.putAll(map);
                for (Entry<String, String> entry : tm.entrySet()) {
                    baos.write(entry.getKey().getBytes(Charsets.UTF_8));
                    baos.write(entry.getValue().getBytes(Charsets.UTF_8));
                }
            }
        }
    } catch (IOException ioe) {
        return 0L;
    }

    // Compute hash

    byte[] data = baos.toByteArray();

    long hash = SipHashInline.hash24(k0, k1, data, 0, data.length);

    return hash;
}

From source file:net.derquinse.bocas.BocasExerciser.java

public static MemoryByteSource data() {
    byte[] deterministic = Longs.toByteArray(INDEX.incrementAndGet());
    byte[] data = RandomSupport.getBytes(RandomSupport.nextInt(1024, 10240));
    for (int i = 0; i < deterministic.length; i++) {
        data[i] = deterministic[i];/*ww  w.  ja  v a  2s .c om*/
    }
    return MemoryByteSource.wrap(data);
}

From source file:com.facebook.util.digest.LongDigestFunction.java

@Override
public long computeDigest(Long input) {
    byte[] bytes = Longs.toByteArray(input);

    return new BigInteger(digest.get().digest(bytes)).longValue();
}

From source file:ws.moor.swissvault.util.Obfuscator.java

public String obfuscateLong(long unobfuscated) {
    try {//from   w w  w  .j a  va 2s .  c o m
        Cipher cipher = Cipher.getInstance("Blowfish/ECB/NoPadding");
        cipher.init(Cipher.ENCRYPT_MODE, secret);
        byte[] encrypted = cipher.doFinal(Longs.toByteArray(unobfuscated));
        return encoding.encode(encrypted);
    } catch (Exception e) {
        throw new RuntimeException(String.valueOf(unobfuscated), e);
    }
}

From source file:com.ebay.pulsar.analytics.metricstore.druid.postaggregator.ConstantPostAggregator.java

@Override
public byte[] cacheKey() {
    // Depending on the Number subclass type
    if (this.value instanceof Long) {
        ByteBuffer buffer = ByteBuffer.allocate(1 + 8).put(PostAggregatorCacheHelper.CONSTANT_CACHE_ID)
                .put(Longs.toByteArray((Long) value));
        return buffer.array();
    } else if (this.value instanceof Integer) {
        ByteBuffer buffer = ByteBuffer.allocate(1 + 4).put(PostAggregatorCacheHelper.CONSTANT_CACHE_ID)
                .put(Ints.toByteArray((Integer) value));
        return buffer.array();
    } else if (this.value instanceof Short) {
        ByteBuffer buffer = ByteBuffer.allocate(1 + 2).put(PostAggregatorCacheHelper.CONSTANT_CACHE_ID)
                .put(Shorts.toByteArray((Short) value));
        return buffer.array();
    } else if (this.value instanceof Byte) {
        ByteBuffer buffer = ByteBuffer.allocate(1 + 1).put(PostAggregatorCacheHelper.CONSTANT_CACHE_ID)
                .put((Byte) value);
        return buffer.array();
    } else if (this.value instanceof Double) {
        ByteBuffer buffer = ByteBuffer.allocate(1 + 8).put(PostAggregatorCacheHelper.CONSTANT_CACHE_ID)
                .putDouble((Double) value);
        return buffer.array();
    } else if (this.value instanceof Float) {
        ByteBuffer buffer = ByteBuffer.allocate(1 + 4).put(PostAggregatorCacheHelper.CONSTANT_CACHE_ID)
                .putFloat((Float) value);
        return buffer.array();
    } else if (this.value instanceof BigDecimal) {
        Double bigDouble = this.value.doubleValue();
        ByteBuffer buffer = ByteBuffer.allocate(1 + 8).put(PostAggregatorCacheHelper.CONSTANT_CACHE_ID)
                .putDouble((Double) bigDouble);
        return buffer.array();
    } else if (this.value instanceof BigInteger) {
        byte[] bigIntBytes = ((BigInteger) this.value).toByteArray();
        int len = bigIntBytes.length;
        ByteBuffer buffer = ByteBuffer.allocate(1 + len).put(PostAggregatorCacheHelper.CONSTANT_CACHE_ID)
                .put(bigIntBytes);//from  w w  w  .  j  a  v  a 2  s. c o m
        return buffer.array();
    } else if (this.value instanceof AtomicInteger) {
        int intVal = this.value.intValue();
        ByteBuffer buffer = ByteBuffer.allocate(1 + 4).put(PostAggregatorCacheHelper.CONSTANT_CACHE_ID)
                .put(Ints.toByteArray(intVal));
        return buffer.array();
    } else {
        long longVal = this.value.longValue();
        ByteBuffer buffer = ByteBuffer.allocate(1 + 8).put(PostAggregatorCacheHelper.CONSTANT_CACHE_ID)
                .put(Longs.toByteArray(longVal));
        return buffer.array();
    }

}

From source file:com.github.benmanes.caffeine.cache.simulator.membership.bloom.AddThisBloomFilter.java

@Override
public boolean put(long e) {
    byte[] bytes = Longs.toByteArray(e);
    if (bloomFilter.isPresent(bytes)) {
        return false;
    }/*from   ww w.  j  ava2s  . com*/
    bloomFilter.add(bytes);
    return true;
}

From source file:co.cask.tephra.visibility.WriteFence.java

@Override
public void startTx(Transaction tx) {
    this.tx = tx;
    if (inProgressChanges == null) {
        inProgressChanges = new TreeSet<>(UnsignedBytes.lexicographicalComparator());
        for (long inProgressTx : tx.getInProgress()) {
            inProgressChanges.add(Bytes.concat(fenceId, Longs.toByteArray(inProgressTx)));
        }/*  w w w  .  j  av a2s  . c o  m*/
    }
}